Кръстословици Том 1 is a puzzle game that offers over 450 Bulgarian crossword puzzles, providing hours of entertainment. The game is based on the world's most popular word game, crossword puzzles. It is believed that the first crossword puzzle was created by Arthur Wynne, an English-American journalist, who published the first crossword puzzle in the New York World newspaper on December 21, 1913.

The game provides text-based word definitions that players must use to guess the words to fill in the empty table horizontally and vertically. The letters in each square are almost always shared by two different words. Each square can only contain one letter, and the squares where the first letter of the word should be placed are numbered or contain the meaning of the word being sought. This free game is available for Android users.